In a previous interview, Beth Holloway stands in front of a poster of her missing daughter.

Lashing out again at Aruban investigators, Natalee Holloway's mother said today that she's upset about how long it took them to figure out a jawbone found on the island isn't her daughter's remains.

Beth Holloway is "deeply disappointed in the time and manner in which she learned of the
results," her attorney, John Q. Kelly, said in a statement today. "Apparently Aruban prosecutors were more sensitive to media concerns than the painful vigil of a mother."

Although Aruban prosecutors announced Monday that they'd make an announcement about the investigation, Holloway hadn't been contacted as of this morning, her spokeswoman said.

That determination was made by comparing the bone to Holloway's dental records.

The lab in the Netherlands also started testing for DNA extracted from a molar, but found that there was only a small amount of genetic material present and it was low quality, partly because the bone is very weathered. But once the dental records were shown not to match, the DNA testing stopped.

It could be used in the future to determine who the remains belong to, but that would require having genetic material from a missing person to compare it to, the prosecutor's office said.

The news was just another in a line of disappointments for Holloway's family, who has been waiting for news of a break in the case since she disappeared in May of 2005 at the age of 18.

She was last seen
leaving a bar with Dutchman Joran van der Sloot, the prime suspect in
her disappearance, on the final night of her trip.

Aruba prosecutors have repeatedly said they lack evidence to charge
Van der Sloot, who is currently in jail in Peru accused of killing a
21-year-old woman on May 30 -- five years to the day after Holloway's
disappearance.